/**
 * Created by jiachenpan on 16/11/18.
 */
/**
 * 金额格式化
 * @param {number} cNum - 需要转换的金额
 * @param {int} n - 小数位
 * @param {int} [x=3] - 整数位每隔几个数字分割
 * @param s
 * @param {string} [c = .] - 分割字符
 * @returns {string}
 */
export function formatCents (cNum, n, x, s, c) {
	var re = '\\d(?=(\\d{' + (x || 3) + '})+' + (n > 0 ? '\\D' : '$') + ')',
		num = cNum.toFixed (Math.max (0, ~~n));

	return (c ? num.replace ('.', c) : num).replace (new RegExp (re, 'g'), '$&' + (s || ','));
}
export function parseTime(time, cFormat) {
	if (arguments.length === 0) {
		return null
	}
	const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
	let date
	if (typeof time === 'object') {
		date = time
	} else {
		if (('' + time).length === 10) time = parseInt(time) * 1000
		date = new Date(time)
	}
	const formatObj = {
		y: date.getFullYear(),
		m: date.getMonth() + 1,
		d: date.getDate(),
		h: date.getHours(),
		i: date.getMinutes(),
		s: date.getSeconds(),
		a: date.getDay()
	}
	return format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
		let value = formatObj[key]
		if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]
		if (result.length > 0 && value < 10) {
			value = '0' + value
		}
		return value || 0
	})
}

export function formatTime(time, option) {
	time = +time * 1000
	const d = new Date(time)
	const now = Date.now()

	const diff = (now - d) / 1000

	if (diff < 30) {
		return '刚刚'
	} else if (diff < 3600) { // less 1 hour
		return Math.ceil(diff / 60) + '分钟前'
	} else if (diff < 3600 * 24) {
		return Math.ceil(diff / 3600) + '小时前'
	} else if (diff < 3600 * 24 * 2) {
		return '1天前'
	}
	if (option) {
		return parseTime(time, option)
	} else {
		return d.getMonth() + 1 + '月' + d.getDate() + '日' + d.getHours() + '时' + d.getMinutes() + '分'
	}
}
//筛选出想要的属性列表
export function filterAttr (attr, arr) {
	if (!arr) return [];
	return arr.map(e => e[attr]);
}

//把{a:b}转化成a=b

export function transformObj(obj) {
	if (!obj) return "";
	var s = [];
	for (var e in obj) {s.push(e+"="+obj[e])}
	return s.join('&')	
}

